Prince William urged people never to forget the sacrifices of the Great War yesterday as he became the patron of the Imperial War Museum Foundation.
The independent charity was set up to raise money for new galleries which will mark the centenary of the First World War.
The prince, who recently travelled to Afghanistan to take part in Remembrance Day commemorations at Camp Bastion, said: "The creation of the First World War galleries, just as the last of the generation who fought in the Great War has passed away, could
not come at a more important time.
"The galleries will play a vital public service, ensuring that future generations never forget what happened in the Great War.
"The Imperial War Museum will bring alive the sacrifice and the horrors of the war, so that the millions who died for our nation are remembered and honoured for generations to come.
"I am truly honoured to be patron of such an important appeal."
The new galleries, which are due to open in the summer of 2014, will be the first in a series of redevelopment projects taking place at the London museum over the next decade.
Lord Rothermere, chairman of the foundation, said: "The trustees of the Imperial War Museum Foundation are exceptionally honoured that HRH Prince William of Wales has agreed to become our patron.
"The centenary of the outbreak of the First World War in 2014 will be a moment of paramount importance in our nation's history, as we remember all those who died in the horror of that war and renew the commitment of future generations to their eternal memory.
"The Imperial War Museum will have a crucial role to play in that national commemoration, and Prince William's clear devotion to such a great cause will help our foundation play its part in delivering a fitting and permanent tribute. We are extremely grateful to him for his enthusiasm and support."